Bradley Cooper and Zoe Saldana have split up again, as they were both too busy with their careers for romance.

The couple, who are both actors, reconciled their relationship in September after a six-month split. However, they decided to break up again before the Christmas holidays, even though they had been
planning to spend the festive season together.

A source said: "Zoe had
planned to spend the holidays with Bradley and his family in Europe. They all
were going to Paris, but things didn't work out between them. Zoe spent New
Year's Eve with friends in Miami. If Zoe was upset over the split with Bradley, she
didn't show it."

Sources say the romance fizzled out once more as they were
both busy with their careers. Bradley is currently promoting Silver Linings
Playbook, while Zoe has been filming Star
Trek and Blood Ties.

Bradley, 37, and Zoe, 34, met on the set of The
Words and dated for three months before splitting last March.

Recently it was claimed Bradley's mother, Gloria, was keen
for him to settle with Zoe and had been spending time with her to discover if
she was the right woman for her son.

A source said: "Gloria loves Zoe, but she wants to know
what her intentions are with the relationship. She knows Zoe isn't getting any
younger and is hoping that if she is the one that they will settle down soon.

"Ideally, she wants a grandchild so the pressure is on
for Bradley to put a ring on it."